5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
7.3 High
AI Score
Confidence
High
0.916 High
EPSS
Percentile
98.9%
The remote SUSE Linux SUSE15 host has a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:0879-1 advisory.
An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the security controls. This occurs for certain uri_whitespace configuration settings. (CVE-2020-25097)
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption. (CVE-2021-28651)
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege. (CVE-2021-28652)
An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic. (CVE-2021-28662)
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing. (CVE-2021-31806)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The package checks in this plugin were extracted from
# openSUSE Security Update openSUSE-SU-2021:0879-1. The text itself
# is copyright (C) SUSE.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(151071);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/12/12");
script_cve_id(
"CVE-2020-25097",
"CVE-2021-28651",
"CVE-2021-28652",
"CVE-2021-28662",
"CVE-2021-31806"
);
script_xref(name:"IAVB", value:"2021-B-0021");
script_name(english:"openSUSE 15 Security Update : squid (openSUSE-SU-2021:0879-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SUSE15 host has a package installed that is affected by multiple vulnerabilities as referenced in
the openSUSE-SU-2021:0879-1 advisory.
- An issue was discovered in Squid through 4.13 and 5.x through 5.0.4. Due to improper input validation, it
allows a trusted client to perform HTTP Request Smuggling and access services otherwise forbidden by the
security controls. This occurs for certain uri_whitespace configuration settings. (CVE-2020-25097)
- An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it
allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount
of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of
memory consumption. (CVE-2021-28651)
- An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it
allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger
memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This
attack is limited to clients with Cache Manager API access privilege. (CVE-2021-28652)
- An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain
response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in
benign network traffic. (CVE-2021-28662)
- An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is
vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request
processing. (CVE-2021-31806)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1171164");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1171569");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1183436");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185916");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185918");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185919");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185921");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185923");
# https://lists.opensuse.org/archives/list/[email protected]/thread/E33JWP5CXQF3EVKKDRECX4457F2ILQP2/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?00d23cf1");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-25097");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-28651");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-28652");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-28662");
script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-31806");
script_set_attribute(attribute:"solution", value:
"Update the affected squid package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-25097");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/03/19");
script_set_attribute(attribute:"patch_publication_date", value:"2021/06/16");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/06/28");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:squid");
script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.2");
script_set_attribute(attribute:"stig_severity", value:"I");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"SuSE Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");
exit(0);
}
include('audit.inc');
include('global_settings.inc');
include('misc_func.inc');
include('rpm.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item('Host/SuSE/release');
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, 'openSUSE');
os_ver = pregmatch(pattern: "^SUSE([\d.]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'openSUSE');
os_ver = os_ver[1];
if (release !~ "^(SUSE15\.2)$") audit(AUDIT_OS_RELEASE_NOT, 'openSUSE', '15.2', release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'openSUSE ' + os_ver, cpu);
pkgs = [
{'reference':'squid-4.15-lp152.2.9.1', 'cpu':'x86_64', 'release':'SUSE15.2', 'rpm_spec_vers_cmp':TRUE}
];
flag = 0;
foreach package_array ( pkgs ) {
reference = NULL;
release = NULL;
cpu = NULL;
rpm_spec_vers_cmp = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) release = package_array['release'];
if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (reference && release) {
if (rpm_check(release:release, cpu:cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'squid');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-25097
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28651
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28652
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28662
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31806
www.nessus.org/u?00d23cf1
bugzilla.suse.com/1171164
bugzilla.suse.com/1171569
bugzilla.suse.com/1183436
bugzilla.suse.com/1185916
bugzilla.suse.com/1185918
bugzilla.suse.com/1185919
bugzilla.suse.com/1185921
bugzilla.suse.com/1185923
www.suse.com/security/cve/CVE-2020-25097
www.suse.com/security/cve/CVE-2021-28651
www.suse.com/security/cve/CVE-2021-28652
www.suse.com/security/cve/CVE-2021-28662
www.suse.com/security/cve/CVE-2021-31806
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
8.6 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
7.3 High
AI Score
Confidence
High
0.916 High
EPSS
Percentile
98.9%